ARISSat-1 Operational Survey
by TAPR's Steve, N7HPR
at 2012 ARRL/TAPR DCC (Digital Communications Conference), Atlanta
http://youtu.be/t0i_6in8CE0
More Info about TAPR at: www.tapr.org
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ARISSat-1 Operational Survey by Steve, N7HPR at ARRL/TAPR DCC, Atlanta, GA,
September 21, 2012
http://www.youtube.com/watch?v=t0i_6in8CE0list=PL2Uw0HJVsJgbkEi1cu1N_4K1SJzIu-PLx
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Hi Everyone,
I spent some time plotting the ARISSat-1 SSTV images geo-spatially. Let me
know what you think!
http://libjoe.blogspot.com/2012/02/arissat-1-sstv-images-geo-referenced.html
Joseph Armbruster
KJ4JIO
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All,
I have been asked to do a presentation at a high-school about satellite
telemetry and LEO amateur satellites and such.
I wonder if there is any material I could use out there such as power points or
so with pretty diagrams and pictures ? Maybe even something
about the latest batch of
I did some more work tonight on the telemetry data.
http://libjoe.blogspot.com/2012/02/arissat-1-analysis-correlated-telemetry.html
Joseph Armbruster, KJ4JIO
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All,
I did some work tonight calculating Eclipses and looking at differences in
elevation.
If you are interested in peer reviewing my calculations, please let me know and
I will send you some files.
http://libjoe.blogspot.com/2012/02/arissat-1-analysis-eclipses-and.html
Enjoy!
Joseph
Everyone,
I started digging into the ARISSat-1 Keplerian Elements in more details. See
some of my effort here:
http://libjoe.blogspot.com/2012/02/arissat-1-keplerian-element-analysis.html
Right now I am generating some basic plots but I wish to do much more with
this, such as:
- intersect
Is there any tool to display ARISSat-1 telemetry date form CSV files
and binaly files on ARISSat Telemetry Archives which are decoded by
ARISSatTLM?
Thank you for you help
73
Masa JN1GKZ
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The ARISSat-1 team created an Ops Survey last September. Have the results
been published anywhere?
Clint Bradford, K6LCS
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Or why not just turn the voice transponder on one of the two radio's that are
on the ISS? Hmmm...
Or why not just install whatever type of setup that would make everyone happy
ON THE ISS? Why waste all that money developing/building all these sats and
then waste all that money on a launch
Just to make sure I'm on schedual. I see the next pass at about 1933Z at CN87
with a elevation of about 76 degrees. I realize the keps on this thing can
change by the minute.
73 Bob W7LRD
Seattle, Wa.
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Nice clear signal at 1803 Z here in San Jose, CA. IHU temp 42 degrees.
Pete
WA6WOA
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23:50-23:56 UTC, 3 Jan 2012, Ele 22 S-SE-E, 145.950MHz FM over Japan
http://www.ne.jp/asahi/hamradio/je9pel/20104ar1.mp3
1:22-1:27 UTC, 4 Jan 2012, Ele 7 W-WN-N, 145.950MHz FM over Japan
http://www.ne.jp/asahi/hamradio/je9pel/20104ar2.mp3
JE9PEL, Mineo Wakita
Good telemetry during the 1933Z pass today. No major changes in temperature
noted. Using today's keps, height is 184.2 km, so it can't stay up much
longer. Max elevation was 39 degrees and had to manually tune to keep the
audio in the telemetry decoder.
73,
Ken, W7KKE
CN75xa
No reception over NH at the predicted time of around 14:25. I kept the
receiver on for a while before and after, but nothing. One of my programs
said it was at 147Km; the other said 127. If 127 is right, then it's
probably down. Otherwise, maybe it overheated.
Also the last telemetry on the
Hello to All
Just copy sstv on 145950 FM , at 19:59 utc max elev. 4 dgr with good signals.
Best 73!
Pedro Cruz - CU2JX
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Applause and accolades to the ARISSat-1 Team, for the tremendous amount of
fun, excitement, opportunities and activity that ARISSat-1 provided!
I got hooked at launch, listening/watching on the internet even as I was
also on HF that day conducting an exercise with the local and state
R.A.C.E.S.
23:50-23:56UTC, 3 Jan 2012, Ele 22 S-SE-E, 145.950MHz FM over Japan
http://www.ne.jp/asahi/hamradio/je9pel/20104ar1.mp3
JE9PEL, Mineo Wakita
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Hi all
No signs from ARISSAT-1 at 1011z.
It must be SK by now...
Thanks for the great memories!
Congratulations to all team for this
absolute sucess.
73 F.Costa, CT1EAT
http://ct1eat.no.sapo.pt
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ALL,
I very much regret to report that on the pass over Cincinnati this
Morning using Dr. Kelso's Keps for January 4, 2011 with the AOS predicted at
14:24Z, there was no evidence of any signal on 145.950 or 145.930 MHz.
It may be that this very enjoyable, interesting and challenging
Hmmm ... One of the first reception reports of ARISSat-1 after deployment comes
from JN1GKZ in Japan.
And the satellite re-enters Earth's atmosphere - over Japan.
Just wonderin' out loud ... (grin)
Clint Bradford K6LCS
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As an avid Hamsat operator with limited equipment I was able to listen and
record a pass
of arissat-1 two days ago. My goal was to make a memento of sorts for my log
of new
acheivements for 2012.I thought some readers might like to see it.
73, VE7DAO / VA7ISS
03 Jan 2012 / 12:16 UTC pass: ARISSAT-1 satellite is still fully functional.
MP3 recording of CW transmission via the transponder: PA3GUO ARISSAT1
03JAN2012 (Jan 03,2012 / 12:16 utc)
http://www.pa3guo.com/arissat1_cw_03jan2012_1216utc_pa3guo.mp3
MP3 recording of FM (voice) telemetry at 145.950
Also the 13:50utc pass: satellite still functioning correct
Henk, PA3GUO
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According to the morning numbers from Space Track, ARISSat-1 is down to 191
km, and losing about 1.5 km per orbit, or about 1 km per hour. The drag
effects are increasing rapidly, so TODAY would be an excellent time to make
any last minute QSOs through the transponder. Thanks to those who are
A nice strong pass over NH around 1500z. Many telemetry frames decoded and
forwarded. The little guy is still going strong! Oddly, the doppler
predictions seemed to be pretty close today even at its highest point when
the frequency changes most rapidly. Is there low solar activity or
All,
Report that 1st part of 16:34Z pass covering Cincinnati was strong. A couple
of minutes later noted some erratic behavior on trying to receive own
transmitted CW, then return signal became weak. Did hear some good CW dots
but no call letters followed. Try next pass at 18:08 Z I will
Hello everybody:
This is David EA4SG.
Just a moment ago at 16:54 UTC while the Arissat-1 was over the vertical
of Madrid, I was listening to the SAT and it stopped/interrumped
suddenly its transmissions while it was still in a theorical sunny or
iluminated area. Not sure if it was the final
Current pass (like RIGHT NOW - 10:03AM PST) was three minutes ahead of
AMSAT-NA's Keplerian data.
But I couldn't have asked for better reception ... Temps were 42C and 41C ...
Clint Bradford, K6LCS
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All,
Copied beacon for pass at around 1800Z. Copied W8ZCF on cw through
transponder at 18:10Z at about 3 deg elevation. Voice beacon also observed
briefly.
73
WC7V
Kerry
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Monitored the satellite fm broadcast at 1805z keps seem current keps seem
accurate, signal dropped out at the calcuated time.
73 Bob W7LRD
Seattle
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Still loud and clear on the 18:08Z Cincinnati pass. Downlink on own signal
good but no response to CQ.. Try the next one at 19:41Z .
Farrell Winder, W8ZCF
Cincinnati, OH
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http://www.pa3guo.com/arissat1_voice_telem_pa3guo_02jan2012_1416utc.mp3
ARISSAT-1 still going strong Jan 02, 2012 / 14:16 utc pass over Europe:
- very strong downlink
- transponder active (CW uplink was easy, OZ1MY had very clear voice signal)
--
Henk, PA3GUO
All,
Just listened to the 18:35Z ARISSat pass over Cincinnati. Satellite was on
time but signal on both 149.950 MHz and 149.930 seemed to be much weaker than
usual. How did others in Midwest and Eastern US receive?
73,
Farrell Winder, W8ZCF
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ALL,
ARISSat on the 21:40 Z pass Dec 2, 2012 for Cincinnati was right on the mark
and had good CW signal return from the transponder. Heard someone calling but
could not get reception above the noise floor.
Trying next pass at 23:12 Z but it may be eclipse controlled.
73, Farrell Winder,
Topic says it all...I don't remember the inductor temps being much above 50
deg; this is just from memory, not a data plot!
Anyhow, to me this appears to be the first indicator that things in the bird
are warming up...
73!
Mark L. Hammond [N8MH]
I heard myself well on SSB and real well on CW, and heard another
station trying to find themself but apparently they couldn't hear me
(and I didn't copy a callsign).
One more pass tonight here for Texas and the west, 00:45UTC... anyone
else going to be trying the transponder?
73,
Jerry
N0JY
I heard the FM signal and a lot of SSB on the pass around 12:45 today, although
it was low in the sky.
I heard PA1BQV (dyslexic moment, could be BVQ?) towards the end of the pass but
didn't copy the callsign of the station he was working.
Nothing at all on the 14:10 pass, although it was a
Updated graphics for ARISSat height (km) and decay rate (km/day):
http://www.qsl.net/py4zbz/arissat.htm#r
there are only 2 or 3 days for re-entry...
73 de Roland PY4ZBZ
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Hi folks,
I just received an ARISSat-1 pass that crossed into eclipse about 80% of the
way by. As expected, the FM signal dropped pretty much immediately upon
entering eclipse. But that's not the reason for the post...
I got a really neat SSTV picture of the Sun streaming into the camera,
Happy New Year!
This morning I kicked off the new year with 2 passes of ARISSat-1, copied
both CW beacon, BPSK telemetry and FM voice/SSTV simultaneously on Kenwood
TS-2000. I would also like to try the transponder but don't know if my
transceiver allow it? This TS-2000 has all modes on its main
All,
I am most pleased to advise that ARISSat-1/ RADIOSKAF-V/ KEDR is very much
alive and giving an excellent performance through the 475.750/145.930 MHz
TRANSPONDER. On the 17:54Z pass over Cincinnati today December 30, I sent and
copied my picture. Picture was my ATV call ID used for
Hi,
I had two passes of ARISSat today over New Hampshire. The first one, I
only caught the tail end and got a Kursk frame or 2, but no satellite
telemetry. The second one I had nice and strong as soon as it appeared
above the horizon, but it must have been in low power mode. The
transmission
Strong signal on the FM downlink 145.950 here in urban Cali, Colombia,
S.A. on a nearly overhead pass at 14:55UTC.
73,
Jerry
N0JY
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Hi
Arissat-1 still working fine .
Transponder signal very good on a pass of 45 degrees.
http://www.youtube.com/watch?v=Ws9W78_t_C0
73
PY5LF
LUCIANO FABRICIO
Curitiba-PR-Brazil GG54jm
http://www.qrz.com/db/py5lf http://www.qrz.com/db/py5lf
I was able to copy ARISSat-1 during three passes today but as was
mentioned in a previous bulletin, the signal seems much weaker, and I
have had to correct the frequency often which means the keps are not up
to date although I downloaded them this morning. I just downloaded them
again a few
I wanted to let W6IHG that I did hear him through ARISSat-1 during my
1817 UTC pass. I have an audio recording of that pass. I believe I
also heard WB2OQQ. There was also a station sending SSTV through the
transponder but the station was not using Doppler. He went right out of
the
Within a few days, ARISSat will burn in the atmosphere!
The fall rate dh/dt is increasing dramatically!
Look at theupdatedgraphs of height and fall rate here:
http://www.qsl.net/py4zbz/arissat.htm#r
73 de Roland.
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Greetings,
The decay rate of ARISSat-1 has slowed down from the last decay prediction
I produced on 2011 Dec. 14.
It currently appears that ARISSat-1 (37772) will now decay on 2012 January 3
plus or minus a day. Caveat lector.
Jim, N8OQ
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Does anyone have a prediction of the lowest altitude for ARISSat-1 and still
have it be functional? With the latest Keps I show its altitude around 155
miles.
Depending of signal strength on today's Cincinnati passes I might try another
SSTV via the Transponder adjusting my Tx to receive
I heard ARISSat-1 loud and clear at 15:55 UTC pass.
Did not decode any telemetry due to bad sound card setup :(
Data transmission and CW sounded very healthy indeed.
-jari oh3uw
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Is anyone using STK to do any analysis on ARISSAT-1. I have it installed
with the free license but it looks like a steep learning curve to figure
out. Anyone with experience to give me pointers off line?
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Hi all,
I again monitored and worked into ARISSat-1 during the earlier pass and the
final one as it entered eclipse
over here in Europe.
The early pass was a low angle from my QTH and screened by buildings so
I was not able to access the satellite. However the FM downlink was
quite
Updated graphics for ARISSat height:
http://www.qsl.net/py4zbz/arissat.htm#r 73 de Roland PY4ZBZ
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Hi all,
I worked into ARISSat -1 this evening( Wednesday 21st December, 1730
hrs) prior to it shutting down via
the timer as it moved into the eclipse area.
My downlink was quite healthy once again just using an Elk antenna and
about 20 watts RF power.
Sadly no takers/response to my CQ
If these keps are correct then hams in DM04rj will be treated to a 53
degree pass from ARISSAT-1 around 2331 UTC (331pm local) this afternoon
(Tuesday). Here in the Santa Clarita Valley, 30 miles north of Downtown
Los Angeles, we are surrounded by 3000-6000 foot peaks. We have not seen
a pass
Please see the updated graphics for ARISSat height here:
http://www.qsl.net/py4zbz/arissat.htm#r
73 de Roland PY4ZBZ
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Note excellent ARISSat-1 SSTV Pictures today from DJ3AK and JA0CAW listed on
the ARISS SSTV Gallery. How about these stations and others trying to send
pictures through the Transponder 435.750 up and 145.950 dn and posting results
on the Gallery. Possibly only a few weeks left to experiment
Wow - ARISSat-1's pre-recorded voice messages, computer voice info, and images
were booming here in Southern California just now!
Clint Bradford K6LCS
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See the updated graphics for ARISSat height here:
http://www.qsl.net/py4zbz/arissat.htm#r
Often, ARISSat switch from high power to low power mode when
passing over my QTH in Brazil, despite being fully illuminated by the sun.
Coincidentally, this happens when he enters the SAA, South
Updated graphics of average height and fall rateof ARISSat:
http://www.qsl.net/py4zbz/arissat.htm#r
73 de Roland PY4ZBZ
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Hi Satelliters,
Using Keps from Space-Track for ARISSat-1 (37772) I have been plotting
various parameters including Mean Motion.
Rrecent results were unexpected.
From day 328to 334 the daily change in Mean Motion has been exactly the same.
The orbital decay is going at a very steady rate.
Greetings,
Using solar data through 2011 Nov. 30 and updating the decay fit I am getting a
re-entry date of 2012 January 12 with a rule-of-thumb error estimate of +/- 10
days or so for ARRISSat-1 (37772).
Regards,
Jim, N8OQ
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How do I know whether or not the data I have been submitting has in fact
been received? I noticed my call sign does not appear in the list on
DK3WN SatBlog and I am sure I have submitted more frames than some of
those listed. Up until now, I was not interested in a certificate but
after
The following graphs show the decrease in average height (km) of ARISSat and
the fall rate (km/day) since the launch on 08/03/2011 and until 21/11/2011. The
calculations are made by me from the daily Keplerian data. It is clearly
visible the irregularity of the fall rate, due to variations in
Greetings,
First, thank you Mineo for reading the AMSAT Journal and making several of my
papers available
on your web site.
My AMSAT Journal
paper published in the March/April 2011 issue is actually still fairly valid
for the scenarios shown in the paper. The solar flux has turned out to be
Hi folks,
Just got my first 1000 BPSK frames of data using the ARISSat-1 Telemetry
software.
Appreciate most of you on the bb have probably already done it already.
I just wanted to say a public thank you for a superb and easy to use piece of
software.
Looks cool on screen too.
Using the CW
I calculated and predicted the time of ARISSat-1 Re-entry.
http://www.ne.jp/asahi/hamradio/je9pel/arissat5.htm
JE9PEL, Mineo Wakita
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Did anyone hear signals from ARISSat-1 on the last pass, (16:53 Z Cincinnati) ?
I did not hear anything on 2 m or the transponder. Will listen and try both 2 m
and also Tx thru the transponder ,Rx approx 145.930 +/- doppler.
Farrell Winder, W8ZCF
Appreciate confirmation of station calling W8ZCF on subject ARISSat Pass. Was
it W9ORD ?? Freq had QRM from local BC station harmonic.
Thanks to station calling.
Farrell Winder, W8ZCF, Cincinnati Ohio
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Today I copied the spectrum of signals received from ARISSat with an SDR-IQ
(and homemade VHF / HFconverter ) and SpectraVue. The frequencies listed are
the transmitted by satellite, and Doppler effectis clearly visible in the
received signals, with higher frequencies at the beginning and
Hi all!
A friend of mine is a schoolteacher who is planning on using Arissat in a
classroom presentation. I wrote a paper detailing how to install/configure
Orbitron and Nova for Windows demo (for eclipse prediction). Also included are
some helpful setup procedures for field operations.
Anyone
In follow up of my previous post request, ARISSAT-1 did not activate for my
location in Cincinnati until there was only about 40 seconds left in the pass
which started at 13:44Z AOS. However, I did hear my CW signals with slight
fading. Due to the eclipse delay and orbit it does not
*Hi All,
I was listening on the 145.95 Voice telemetry Beacon Freq.
@ 1310 UTC pass here in ENY didn't hear a peep from
ARISSat-1 , was wondering if it has gone silent?
My Grid Square is FN31! 73,.Stu (WA2BSS)
PS (a request)
Was wondering if someone has a Duplexer?
*IE a Box, on 1 nd
I've been wondering if anyone besides me has tried to hear themselves
using an Arrow or Elk antenna via ARISSat's linear transponder.
If you have tried it and successfully heard yourself, please let me
know. I'm curious as to what was your formula for success. The rig
I've been using is an
As reported over the weekend, Arissat-1 is no longer audible in the UK, because
she does not switch on until after about 14 minutes from entering sunlight.
I believe the sequence is:
enter sunlight: MET starts: timer activated
14 minute wait before tx - other systems live
Tx on with data at
Interesting thread regarding MET and ARISSat-1 switch on.
Someone made the very good point that the transition in or out of sunlight
(eclipse) is not an on/off event. I remember many MIR visuals, and as she
passed
from sunlight in the west to darkness in the east there was a significant
Using Orbitron 3.71 software, I can tell that the penumbral duration today
was 9 seconds. However, this will vary in the future as the angle of the
orbit to the sun changes. However, the first sunlight the satellite will get
will be very red (due to the blue light scatter caused by the
Although I have severely limited satellite visibility I have been copying
telemetry from ARISSat1 for some weeks. I live in a valley surrounded by chalk
hills and cliffs over 100 metres higher than me so my visible horizon is +12
degrees to +18 degrees at best. Also my 3+3 element short
John K8YSE, thanks again for the QSO on ARISSat-1 today. They're not easy, but
it can be done. That's my third on the bird.
73 de Sebastian, W4AS
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I have submitted for a tlm certificate my analysis of the voice telemetry from
Arissat-1 on certain orbits in September (when I was present, hi).
The dates of the receptions in September are in the analysis spreadsheet.
The MET is decreasing, I think this is because the satellite comes out of
I have made 2 different successful short duration CW transmissions through
the ARISSat-1/RADIOSCAF-B transponder over the last 2 days. Called CQ with no
replies. My receiver fixed to receive on 145.934.5. Transmissions made near
435.950 and varied to receive. I received back my signal
Hi all,
I had a 1 deg pass this morning and could grab 18 telemetry frames (!).
Interesting was that I received no one KURSK frame.
Can someone confirm this?
73, Mike
DK3WN
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Today I was able to make my first contact on ARISSAT-1. It was at 2038z
with Sebastian, W4AS. It took a while for us to make it, but we finally
succeeded. Was Sebastian's second contact. Glad I was able to make at
least one contact before we loose the bird.
On the just concluded pass of ARISSat, all the KURSK frames I copied were all
zeros (except for the header).
Is there a problem or a change?
Ron W5RKN
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I have noticed on a number of daytime passes over the Southern US that
the satellite is ON at AOS but within a minute or so switches off, NO
FM, CW beacon or BPSK.
Is this what is considered normal and I did not interpert the operation
scheme correctly.
Secondly,
I have been sending in
I am very happy! I received my certificate for SSTV !
http://www.qsl.net/py4zbz/arissat.htm#m
73 de Roland.
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The folks behind issuing the ARISSat-1 reception report certificates ARE hard
at work - even
on a Sunday! - getting them sent out: I just received one! If you haven;t
received yours yet,
it is coming!
Clint Bradford, K6LCS
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All,
The requests are being answered systematically. The requests by those
not in North America are being addressed by another group of
volunteers because of the quantity. Be patient.
Please send your reports to the proper engineering team-- We just
give out certificates so please do not
Hello everyone,
This morning I had a good pass of ARISSat-1 over Hanoi, Vietnam and decoded
its BPSK-1000 for the first time. According to ARISSatTLM, more than 30
frames were sent to the server out of more than 60 decoded. Manually tuning
the CW signal to keep it within range is fun and it was
The FM telemetry downlink was initially acquired at 0014 UTC with the end of
the SSTV transmission. The signal was barely audible.
Transmission resumed at 0016 with S9+ strength, no noise, and the following
details:
- ID
- Greeting in English
- Secret word
- MET = 45 minutes
- IHU temp. =
Hi,
Very good quality recordings of ARISSAT1 wide band RF signals are
available on AMSAT
telemetry directory.
http://www.amsat.org/amsat/ftp/telemetry/arissat/recordings/
However, the server downloads are very slow probably due to a limited
bandwidth.
Laurent, F6FVY managed to upload the
Hi all.
The ARISSat team seem to have reached the conclusion that the Silver Zinc
battery technology is not really suited for
an orbiting satellite with a 55 / 35 minute charge and discharge cycle. I
wonder if a couple of small
Lithium polymer battery packs would be a suitable replacement for
Hi all ..
I am receiving the CW and TLM ok signal wise ..
I tune in the CW to the mark in the CW / BPSK window..
But I don't ever receive any telemetry ..
Using USB, FT897D ..
I use the rig and computer for BPSK31 all the time ..
Any ideas or suggestions ?? I even watched the You tube
At the 1850z pass, ARISSat passed at approximately 20 degrees for me. I hadn't
tried the SSB transponder in a while, and decided to give it a go. Once I
found my downlink, it was loud and clear throughout most of the past. Called
CQ for several minutes, but no takers.
Those who haven't
Very clear pass overhead in the UK (28-08 20.10 UTC):
MET: 54 minutes
IHU: 33 deg C
Control Panel: 38 deg C
Batt Volt: 36.03V
Batt Current: -8mA
Dominic G6NQO
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Not an AMSAT-NA
rpt 5/7 sig last night via the transponder called cq a few times heard a EA
station that was weak but didnt manage to work him.Its not easy to work but
possable. 2E1EUB
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Not
No CW beacon was heard. FM downlink was acquired at 0312 UTC with at least
S7 and no fading but some noise.
MET = 49 minutes
IHU temp = +39 degrees C (not sure about final integer due to noise)
Control panel temp = +28 degrees C
Battery voltage = 35.70 Volts
Battery current = -12 mA
I was having a really good pass gpong from my NW-SE and I had copied 6
frames of Telemetry and 5 frames of KURSK data when the bird just went
silent. It never came back during this pass. It was the 08-27-2011
0241 UTC pass over Lake Erie. I am curious if anyone has heard it since
than.
Is it just me, or was the last pass over Europe (orbit # 333) very weak?
Barely heard it at all, before I have been getting S9 +60dB signals
Pete
Mi0VAX
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Not an AMSAT-NA
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